Apparatus for making radiators



May 28, i935. A. y. F, MclN-nRE 2,002,904

APPARATUS FOR AVIAKIG RADIATORS Original Filed Aug. 15, 1952 4 Sheets-Sheet 1 l, 7c( INVENTOR Jmes MGI/'M' I ATTORNEYS May 28, 1935.

J. F. MCINTIRE APPAARATUS FOR MAKING RADIATORS Original Filed Aug. l5, 19372 4 Sheets-Sheet 2 I I INVENTOR mea NICI-Tire n mmz ATTORNEYJ May 28, 1935.

J. F. MclNTlRE APPARATUS FOR MAKING RADIATORS Voriginal Filed Aug. 15, 19521 4 sheets-sheet 3 May 28, 1935. J. F. MlNTlRE APPARATUS FOR MAKING RADIATORS Original Filed Aug. 15, 1932 4 Sheets-Sheet 4 UUGUUUUU nunuouunnnnu nunummmm/i ATTORNEYS n Patented May 28,*1935 e l UNITED" STATES PATENT-1 oliricjrzf APPARATUS FOR MAKING RADIATORS James F. Mclntire,y Detroit, Mich., assignor Yto United States Radiator Corporation, Detroit, Mich., a corporation of New York originorepplieetion Augusty 15, 1932, serial No. 628,950.l Divided and this application March 19,7193475Seria1N0. 716,421 i Y 11 claims. (ci. g2g- 131) This invention relates generally to the manu- Walls` 4C and 4d 4respectively Aof theuidway are facture'of radiators and constitutes agdivision of parallel to each other and to the Aside vWalls 2. my application `filed August 15, 1932, Vbearing The ns are locatedrbetween theheaders and Serial No. 623,950. Y project laterallyfrom the sides dcand v401 of the YL 5 In the accompanying drawings: fluidway ltothejsi'de Walls 2, Whilethevvns 5 'Figure l is a perspective View of apparatus are located upon and project laterally from-Oppeembodying my invention; site sidesof the headers 3 to the sidewalls v2'. Figure 2' is a fragmentary vertical longitudinal Preferably the fins 5 andqG jare relatively7 thin sectional view through the construction illusand areiclosely spaced in parallel relation `:to

l trated inVV Figure 1 Y Y the end Wallsv l. In this connection it AWilp-be 1o ligure` 3 is a vertical transverse sectional view nOted ythat the fills. @Je upOn OppOSte 4SldeSj of taken substantially on the line 3 3 of Figure 2 the-openings 2a and thatthej latter are"y arranged Figure e is a fragmentary bottom lplan viewfof n1 verticallyY spaced rows` extending longituthe cover' core illustrated in ,Figures 2 and', 3; dinally of the radiator. It will .also be noted I l5 Figurev 5 is a perspective View of one of the thliihe Upper edges 0f the Vend Wall lyside Walls l5 endcores; t t 2, iins 5 and e, top Wall llaofY the uidway `and l-"1guresv 6 and 6a are perspective views oi the-upper ends of the headers 3 are substantially opposite sides of one of the header cores;` te flush and that the lower edges,wa11s and endASvOf Figures 7 and 7e are perspective Views 0f 0p- Said pa-IS arey als() S1lbSltntllllly:llll'shpl ThllS a.

posite sides of one ofthe on cores; i Y very Compact and uniform ,Construction is pro- 2o .VFigure 8:' is 'a fragmentary top plan View of vided. -4 f l .i

a radiator formed in the apparatus illustrated Preferably end,heedel,-rlfluidweyand COVeI in' Figures l' to 7a, inclusive; dry Sand COIeS l, 8, 9, mand llirleSpeCllVelYfeI'e 1 Figure. o is a side elevation oftheiraoiator employedv in the process of, rnanufaeturiogYthevv illustrated in Figure 8; radiator justfdescribed. A sshown, lthere are 25 Figure 10 is a sectional View taken on the line two end `coresfl ,and each preferably C OInplSeS ,ldm `of Figure 8; Y s Y a relativelythick upright body or slab having Figurej l1. is a sectional view taken onthe line let Outer and Stepped inner Walls 'la and "lb re- `l ;1| offljgure 8. Y Y spectively andflat upperand lower ends 'leand- Referring' now to the drawings-A is a radiald leSpeCt-ively. The Steps le'arelatfandfconi- 3o rvtor of the single iiuidway type and B designates Sttute lille nippel edges 0f pleleflke pllOIlSJf generally the apparatus in which such o radiator of the slabs l.` AS shown, eeenof these portions may be. formed. As shown, the radiator A has lf has e flat .feeelg in which sllbstentiellyequa'e end' walls. l, side Walls 2, headers 3, a fluidway 'eCeSSeS'l'h COTIeSpOIl-lgn:Shape t0 the end 4, and ns 5 and 6 respectively. Preferably walls ll of the radiatorvare provided for receiv- 35 the parts are integrally united and forma radiaine'4 molten metal. A. Y j d tor that has a uniform cross sectional area d The header eores are arranged in" two series, lthroughout its length. The end Walls l` arerflat One upon the ,inner side :of each end 'core '1.Y and are relatively thick. The side Walls 2 are 'AS Sh0WI1,eeCl1 0f th'e'headel COIeS 3. comprises 40 thinner than the end walls and ere'terminally a plate that substantiallyfeorrespondsin area to 4o secured' thereto at the outer upright edges therethe plate-like portionslf of the'end cores. Prefer. Preferably such side wens 2 vare provided at erebiy each eoref hos a vertical substantially spa-ced points thereof with openings 2e; 'The rectangular-Shaped opening Y 8a which extends headers 3 are substantially rectangular in'shape tliIQU-gl'l the upperedge 3b ofthe core and isvproand are vertically disposed upon the'inner sides vided etrtS lippe-I' lends With Hering edge-D011- .fle lofA the end Walls l in spaced relationto the tOnS 8 Vand 3d respectively; VThe faces 8f and side Wallsy E. Preferably openings Je andeb 8f respectively Of @eeh COIe 3Y are flat; lljOWeVeI, respectively are provided in the .headers for eeeh'faee 8e iS preferably provided llpOnvOppOSte the reception of suitable piping (not shown). rSides 0f the Opening Se With recesses '8e andL8h The uidway il extends between the headers 3 respectively corresponding in area torthc'ns 50 'and is disposed substantially midway between Webs 8i and Sk corresponding in area tothe yand in substantially parallel' relation to the side Openings 2a are'pIOVded et Speeed pOintSOftlihe Walls 2. VThe top Wall d? of th'eniiuidvlay is upright edges 8l andm respectivelyfof ther rehat,v While the bottom Wall lib thereof iis sub- Ycesses 8t'tand 8h, and slots 8n and y@respectively 5 Ystainti'a-lly Y-shape in cross section. Theside corresponding in area; to the cross section ofthe 55 f side walls 2 are provided along said'edges 81 and 8m above and below the webs 8j and 811.

The fin cores 9 are arranged in series between the two series aforesaid of header cores 8, and each preferably comprises a plate that corresponds in area to a header core 8. As shown,

each n core 9 has a vertical elongated opening 92L which extends through the upper edges 91 of each core and is provided at its upper ends with flaring edge portions 9 and 911 respectively. The faces 9e and 91 respectively Vof each core plate 9 are flat, however, each face 9e being pref-r erably provided upon opposite sides of the opening 9a with recesses 9g and 911 respectively cor-Y responding in area to the ns 5. Webs 91 and 911 corresponding to the webs 81 and 811, and slots 91 and 9m respectively corresponding to the slots 8n and 8p are provided along the upright edges 9n and QP respectively of the recesses 9g and 911;

A The uidway core I0 extends between the end vcores 1andvpreferably has a pair of header poritions Il)a and 101 respectively and an intermedi- -ate web portion IG'CQ As'shown, the header portions I()a and |01)V are'substanti'ally rectangular in coniguration and have substantially cylinder 'prints Id and IIIe respectively projecting vertically from the upper and lower ends thereof. -These header'portions H111L and |01 are also provided upon their outer sides with vertically spaced, substantially square and substantially cylinder portions IIJf rand Ig respectively. The web I0c is relatively thin and merges -into the jinner sides offthe headerrportions Iiia and 101 fat the; centers thereof... The lower `edge 'i611 of in cross sectionfand is in line with the lowerV fends of the header portions II!a and 181, while Vthe upper edge IU1of the web is substantially at and Ais located above the upper ends 'of the header Vportions.Vv Suitable horizontal'and vertical passagesv |01? and V|91 respectively are 4provided in the core IIltopermit the escape of core gases. Adjacent, the header portions Ia and |01 the web I9c isprovided at 4the upper and lower edges, thereof with recesses 10m and 1011` respectively which are adapted to receive the spring arms of suitable .chaplets I0D and 1811. Y f YThe cover core Il is provided longitudinally jthereoffwith a sprue .IlfL and a gate H1? through which the molten metal'may flow from the top vto the fin, header, uidway and end coresv 9, 8, III and '1, respectively. In this instance, the Vcover core II rests upon the steps 1e of the end cores'and upon the upper edges of the fin and header cores 9 and 8. Projecti-ngdownwardly vfrom the body of the core II at oppositev ends thereof are substantially square-shaped Vportions II that t within theV openings 8a in the header cores 8, hile projecting downwardly 'from the body of the cover core II intermediate s aid portions I Ic isV a rib -I Id that ts within the openings 91 in the fin cores 9. As shown, the 'sprue IIa is in lthe body of the core II, while the gate H14 is in the rib IId. Preferably webs -IIf extend across the gatey at spaced points thereof for engagement by the chaplets IOP. vIn use, the cores 1, 8 and 9 are assembled and 'clampedin a suitable rack such as X (see Figure 1,). The'fluidway coreV i0 is then placed in the openings 82L and 92L respectively inthe header and fin cores, and finally the cover core `I I is placed upon the steps 1er of the end' cores 'and upon the upper edges of the header and V1in cores. Inthis connection, it will be noted '8g and 81x respectively,

'.duidway extending between that the lower end and opposite sides of certain of the openings 8a are engaged by the chaplet |89, while the opposite sides of Ycertain of the openings V9a and the lower face of the rib Hd are engaged by the chaplet IEP. Thus, the fluidway core I8 is eiectively held in position for the pouring of moltenmetal.

After the parts have been assembled as described, molten metal maybe poured into the sprue ilEL and will flow through the gate IIb into the openings 8a and 9a, recesses 111, 8f", 811, 9g and 911, and slots 811, 8P, 91 and 9m to form the radiator. Thus, it will be apparent that the end walls I willv be formed in the recesses 111 in the end cores 1, the side walls 2 will be formed in the slots 811, 8p, 91 and 9m in the header and fin cores 8 and 9, the headers 3 and fluidway 4 will be formed in the yopenings 8a and 9a respectively in the header and fm cores, and the fins 5 and E 4will be formed in the recesses 9g, 911, in the fin and header cores. The cover core II cooperates with the end, headerf and n cores 1, 8 and 9 respectively, to form the upper ends of the headers 3 and the top wall 4a of the fluidway.

What I claim as my invention is:

1. A mold for forming a radiator having end andy side walls, headers upon the end walls, a fluidway extending between said headers, iins projecting laterally from opposite sides of the iluidway to' said side walls, and iins projecting laterally from the headers to said side walls,

comprising a longitudinally extending dry sand vcore having a relatively thin elongatedk body for forming the fluidway and having enlargements at opposite ends thereof for forming theheaders,v and a casing for said core comprising slabs at opposite ends of said core in spaced relation to the enlargements, vertically disposed iin cores tively spaced beneath and upon opposite sides Y of said elongated body, vertically disposed header cores arranged one against the other in rows between t'neslabs and the adjacent n cores aforesaid and having substantially horizontal and verticalportions respectively spaced beneath and upon opposite sides of said enlargements, and a cover core extending over the vertical portions of said iin and header cores between said slabs and having depending portions -that extend between the vertical portions of the header 'and iin cores, said cover core having a sprueV for molten metal, and one of said depending portions having an opening therein communicating with the sprue and with the space between the vertical portions of said n cores and forming a gate for the reception of molten'metal, the slabs being provided in their inner faces with recesses into which metal may ow to form the end walls aforesaid, the fin cores being provided in horizontal alignment with the recesses just mentioned with recesses into' which metal may flow to form `the iirst mentioned fins, the header cores being provided in horizontal alignment with the recesses aforesaid -with recesses into which metal may flow to form the last mentioned fins, the bases of the recesses in the outer upright edges with aligned slots into which metal may flowI to form the side walls aforesaid.

2. A moldv for forming a radiator having end and side walls, headers Vupon the'end walls, a said headers, and

Cil

vns projecting laterallyfrcmopposite sides of the uidway tosaid side walls, comprising a rlongitudinally extending dry sand' core having a relatively thin elongated body vfor forming the fiuidway and having enlargements at opposite ends thereof for forming the headers, and a casing for said core comprising slabs at opposite ends of said'ccre in spaced reiation to the enlargements, vertically disposed iin cores arranged one against the other in a row between said enlargements and having substantially horizontal and vertical portions respectivelyspaced beneath and-upon opposite sides of said' elengated body, vertically disposed header cores' arof the header and rinY coressaid cover core and A Vone of said depending portions having openings therein communicating with the space between the vertical portions of said fin and header cores and forming a gate for `the reception of molten metal, the slabs being provided in their inner ^`rfaces with recesses into, which metal may ow VtoV iormthe end walls aforesaid, the iin cores being provided in horizontal alignment with said 'recesses with recesses into ywhich metal may ilow to form the ns of the radiator, the bases Aof the recesses in the nn cores and the header cores being provided substantially inalignment with the outer upright edges of the recesses with aligned slots into which metal may flow to form Vthe side walls of the radiator. Y

' 3; A mold for forming a radiator having end and side walls, headers-,upon the'end walls, a

fluidway extending between the headers, and ns projecting laterally from the outer sides oi the headers to said side walls, comprising a longi tudinally extending dry sand core for forming the fluidway and having enlargements at opposite ends thereof for forming the headers, andr a casing for said core comprising slabs at opposite ends of said core in spaced relation to Vsaid enlargements, vertically disposed iin ores arranged one against the other in a row lbetween vsaid enlargements and having substantially horizontal and vertical portions respectively spaced.

beneath and upon opposite sides oi" said longitudinallyy extending core, vertically disposed header cores arranged one against the other in rows between the slabs and the adjacent n Vcores and having substantially horizontal "and vertical portionsv 'respectively spaced beneath and' upon opposite sides of `said enlargements, said slabs being provided above the fin and header cores with steps, and: a' cover core eX- tending over the vertical portions of said iin and header cores and resting on` saidsterza said cover coreA being provided between saidv 'steps with depending portions that extend between the vertical portions ofthe header and n cores, ,said coverrcore and'one of said depending portions having openings therein communicating with the space between the vertical portions of said iin and header coresand forming a gate for the reception of molten metal, the slabs being Vprovided in their innenfa'ce'swith recesses intovwhich metal may ow to form vthe end walls j aforesaid, the' header cores being provided in horizontal alignment with the recesses afore-f Y andthe bases of the recesses in the header cores :being provided substantially in alignment with' the outer upright edges of the recesses in the slabs with aligned slots into 'which metal may flow to form the side walls ofthe radiatori l. A moldicrforming a'radiator havingvend and side-walls, headers upon the end walls, av

iluidwayA extending between said headers, fins fsaidi'withrecesses intor which metal may low to vform the iins of the-radiator`,the n cores projecting laterally romopposite sides of the liuidway Vto said sidewalls, and ns 1projecting f laterally ircnivthe' headers Yto said side walls,`

comprising a longitudinally extending dry sand'AY core for forming the fluidway and having enlarge.-

ments atopposite ends thereof for forming4 the headers, andra casing for said core comprising slabs at opposite ends of said core. in spaced lation to the enlargements, vertically disposed fin cores arranged one against the other in a row between said enlargements and having substantiaily horizontal 'and `vertical portionsrespeetively A spaced beneath andy lupon opposite sides of said longitudinally extending core, vertically disposed header cores arranged one g againstr the other in rows between the'slabs and they adjacent n cores aforesaid and having substantially horizontal and vertical portions Arespectively. spaced beneath: :and ,upon oppositer sides of' said enlargements, said slabs beingfproev vided above the n and header cores with steps,

l and a cover core extending over the vertical portions of Vsaid iin and header'coresand `resting ony said steps, `said cover core being vprovided.Y be-k tween saidv steps with depending portionsk that extend between the vertical portions of the header and fini cores, said cover, core and yone of said ,depending portions having openings therein communicating withl the space between the vertical portions of said fin cores and form'- ing a gate for the reception of molten meta-l, the slabs being provided intheir inner `faces below:

said lsteps with recesses into which ymetal mayv flow to form the end walls ofthe radiator, the fin cores being provided inhorizontal alignment with the recesses just mentioned with recesses into whichy metal may flow ,to form the rst mentioned hns, theiheader cores being providedinr horizontal alignment with the Vrecesses aforesaid with Vrecesses into which metal may flow to form the last' mentioned fins, the bases of vthe-recesses in the iin and header cores being provided at their outer upright edgesV with aligned slots into which metal may iiowto form thesideY walls of theradiator.

5. VA Vmold forforming a radiator havi g side walls, headers between said side walls atop@- site ends thereofhand a fluidway extendingbej: tween said headers, comprising-a longitudinally,

Vextending dryV sand core for forming the fluidrway and having enlargements at opposite ends thereof vfor forming the headers, and a'casing for said corre comprising slabs at opposite ends of said core in spaced relation to the enlarge-jv ments, vertically disposed plate-like -coresfa ranged one against the other ina row between said enlargements and having substantially horia` zcntal and vertical portionsv respectively ,spacedVY beneath .and upo'nfopposite sides of said longitudinally "extendingcore, vertically disposed lheader cores arranged one against .the other'in` rows between the slabs and the adjacent plate..

like cores a-foresaid and having ,substantially horizontal and vertical portions respectively spaced beneath and upon opposite sidesV of fsaid enlargements, said slabs being provided above .thenn and header coreswith steps, anda cover plate-like cores, said cover core andl one of said 'depending portions depending portions having openings therein communicating with the space between the vertical portions of said plate-like cores and forming a gate `for the reception of molten metal, the plate-likecores and header coresbeing pro- ;vided with substantially lhorizontally aligned `slots intowhich metal may flow to form the side kwalls of the radiator.

6. A mold for iormingV a radiator havingy side Walls, headers between said side walls at opposite ends thereof, a iiuidway extending between said headers'and iins projecting laterally from opposite sides of said yiluidway to said side walls, comprising a longitudinally extending dry sand core for forming the fluidway and having ven-A largements at opposite ends thereof for forming the headers, Vand a casing for said core comprising slabs at opposite ends of said core in spaced'relation to the enlargements, vertically disposed n cores arranged one against theother in a row between said enlargements and having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said longitudinally extending core, very tically disposed header cores arranged one `against the other in rows between the slabs and ithe adjacent n cores aforesaid and having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said enlargements, said slabs being provided above the iin and header cores with steps,

'and a cover'core extending over the vertical pory tions of said 1in and header cores andresting on said steps, said cover core being provided between said steps with depending portions that extend between the vertical portions of the header and fin cores,v said cover core and one of said having openings therein communicating with the space between the vertical portions oi said fin cores and forming a gate for the reception of molten metal, the fin cores being provided upon opposite sidesV of the longitudinally extendingcore with substantially horizontally aligned recesses into which metal may ow to form the ns of the radiator, the iin cores and header cores being provided with substantially horizontally aligned slots linto which metal may flow to form the side wallsl of the radiator.

'7. A mold for forming a radiator having sidel walls, headers between said side walls at opposite ends thereof, a fluidway extending between said headers, ns projecting laterally from opposite sides of the Vfluidway to said side Walls,

and fins projecting laterally from the headers to' said side walls, comprising a longitudinally extending dry sandcore for forming the fluidway and having enlargements at opposite ends rthereof for forming the headers, and a casing and vertical portions respectively spaced beneath and upon opposite sides of said longitudinally extending core, vertically disposed header cores arranged one against the other in i rows between the slabs and the adjacent iin cores aforesaid and having substantially hori- Zontal and vertical portions respectively spaced beneathand upon opposite sides of said enlargements, said slabs being provided above the fin and header cores with steps, and a cover core extending over the vertical portions of said iin and header cores and resting on said steps, said cover core being provided between the steps .with depending portions that extend between the vertical portions of the header and iin cores, said cover core and one of said depending portions having openings therein communicating with the space between the vertical portions of said'n'cores and forming agate for the reception of molten metal, the nn cores being provided upon opposite sides of the longitudinally extending core with substantially horizontally aligned recessesrinto which metal may iiow to form the rst lmentioned ns, the header cores being provided in horizontal alignment with the recesses just mentioned with recesses into which metalmay flow to form the last mentioned ns, the bases of the recesses in the fin and header cores being provided with aligned slots into Vwhich metal may ilo-w to form the side walls of the radiator.

8. A mold for forming a radiator having end and side walls, headers upon the end walls, and a fluidway extending between said headers, comprising a longitudinally extending dry sand core for forming the iiuidway andvhaving enlargements at opposite ends thereof for forming the headers, and a casing for said core comprising slabs at opposite ends of said core in spaced relation to the enlargements, vertically disposed plate-like cores arranged one against the other in a row between said enlargements Yand having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said longitudinally extending core, vertically disposed header cores aforesaid and having substantially horizontal and vertical portions respectively spaced befneath and upon opposite sides of said enlargements, said slabsrbeing provided withksteps, and a coverV core extending over the vertical portions of said plate-like and header cores and resting on said steps, said cover core being provided between said steps with depending porltionsthat, extend between the vertical portions of theheader and plate-like cores, said cover core and one of said depending portions having openings therein communicating with the space between the vertical portions of said plate-like cores and forming a gate for the reception of molten metal, the slabs being provided in their inner faces below said steps with recesses into which metal may ow to form the end walls of the radiator, the plate-like cores and header cores being provided with substantially horizontally aligned slots into which metal may flow to form rthe side walls of the radiator.

9. A mold for forming a radiator having end and side walls, headers upon the end .wa1ls, and a fluidway extending between said headers, comprising a longitudinally extending dry sand vcore for formingpthevfluidway and having en- Cil largements at opposite ends thereof for forming the headers, and a casing for said core i Aextending core, vertically disposed header cores arranged one against the other in rows between the slabs and the adjacent plate-like cores aforesaid and having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said enlargements, and a cover coreextending over the verticalportions of said plate-like and header cores and having depending portions that extend between the vertical portions of the header and plate-like cores, said cover core and one of said depending portions having openings therein communicating with the space between the vertical portions of said plate-like cores and forming a gate for the reception of molten metal, the slabs being provided in their inner faces with recesses into which metal may flow to form the end walls of the radiator, the plate-like cores and header cores being provided with substantially horizontally aligned slots into which metal may flow to form the side walls of the radiator. Y

l0. A mold for forming a radiator having end and side walls, headers upon the end walls, a iluidway extending between said headers, ns projecting laterally from opposite sides ci the iiuidway to said side walls, and hns projecting laterally from the headers to said side walls, comprising a longitudinally extending dry sand core for forming the iluidway and having enlargements at opposite ends thereof for forming the headers, and a casing for said core comprising slabs at opposite ends of said core in spaced relation to the enlargements, vertically disposed fin cores arranged one against the other in a row between said enlargements and having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said longitudinally extending core, vertically disposed header cores arranged one against the other in rows between'the slabsV and the adjacent iin cores aforesaid and having substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said enlargements, and a cover core extending over the vertical portions of said iin and header cores, said ycover corev having depending portions that extend vbetween the vertical portions of the header and fin cores, said cover core having a longitudinally extending upwardly opening sprue for molten metal andil one of the depending portions of said cover core having a gate for conducting molten metal from the sprue to the spacebetween the verticalpor-` tions of said fin cores, the slabsbeing provided in `their inner faces below vsaid steps with recesses into which metal may flow to form the f end walls of the radiator, the fin cores being provided in horizontalalignmentwith therecesses just mentioned with'recesses into which metal may flow to forni the first mentioned fins, the header coresbeing provided Vin horizontal alignment with the recesses aforesaid:

with recesses into which metal may flow to form the last mentioned iins, the bases of the recesses in the fin and header cores being provided'withv aligned slots intorwhich metal may v iiow to form the side walls of the radiator.

1l. A mold for forming a radiator having end and side walls, headers upon the end walls, and a fluidway' extending between said headers, comprising a longitudinally extending dry sand core for forming Ythe fluidway and having enlargements at opposite ends thereof for forming the Y headers, and a casing for said core comprising slabs at opposite ends of saidcore in spaced relavtion to said enlargements, vertically disposed plate-like cores Varranged one against the other in a row between said enlargements andhaving substantially horizontal and vertical portions respectively spaced beneath and upon opposite sides of said longitudinally extending core,Y

vertically disposed header cores arranged one against the other in rows between the slabs and the adjacent plate-like cores aforesaid and hav-` ing substantiallyhorizontal'and vertical por-l tions respectively spaced beneath and upon opposite sides of said enlargements, said slabs being provided with steps, and a cover core extending over the vertical portions of said platelike and header cores and resting on said steps, said cover core being provided between said steps with depending portions that extend between the vertical portions of the header and plate-like cores andbeing provided longitudinally thereof with an upwardly opening sprue andV 

